Basic Information

Name: Dubnium 
Symbol: Db 
Atomic Number: 105 
Atomic Mass: (262.0) amu 
Melting Point: Unknown 
Boiling Point: Unknown 
Number of Protons/Electrons: 105 
Number of Neutrons: 157 
Classification: Transition Metal 
Crystal Structure: Unknown 
Density @ 293 K: Unknown 
Color: Unknown 
Other Names: Unnilpentium (Unp), Joliotium (Jl), Hahnium (Ha)
Date of Discovery: 1970 
Discoverer: Albert Ghiorso 
Name Origin: After Dubna, Russia 
Uses: No uses known 
Obtained From: Man-made